Evaluating A Selection of Tools for Extraction of Forensic Data: Disk ...

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Table 4.20 Summary of Tools Testing Results Test Cases FTK Pass Failed Rate Assertions Helix3 Pro Pass Failed Rate Assertions AIR Pass Failed Rate Assertions TC-01 100% None 90.90% ALOG02 100% None TC-02 100% None 90.90% ALOG02 100% None TC-03 85% AFR06 AHS01-03 75.00% AFR06 AHS01-03 ALOG02 85.00% AFR06 AHS01-03 TC-05 100% None 81.81% ALOG01-02 100% None TC-06 100% None 81.81% AFR08 ALOG02 100% None TC-07 100% None 87.50% ALOG02 87.50% AIC04 TC-08 100% None 83.33% AIC-10 ALOG02 75.00% AIC04 AIC10 ALOG02 TC-09 100% None N/A N/A N/A N/A TC-10 85.71% AIC08 N/A N/A N/A N/A TC-11 100% None N/A N/A N/A N/A TC-12(1) 78.95% AFR06 AHS01-03 28.57% AFR05-06 AHS01-03 78.95% AFR06 AHS01-03 TC-12(2) 15.79% EXCEPT AFR01-03 28.57% AFR05-06 78.95% AFR06 AHS01-03 TC-13 91.67% AIC11 83.33% AIC11 ALOG02 91.67% AIC11 TC-14 91.67% AIC11 83.33% AIC11 ALOG02 91.67% AIC11 TC-15 88.89% AIC11 ALOG02 88.89% AIC11 ALOG02 94.44% AIC11 TC-16(1) 100% None 33.33% AFR-01 & 03 100% None TC-16(2) 100% None 93.33% ALOG02 100% None TC-17 78.95% AFR-06 AHS01-03 73.68% AFR-06 AHS01-03 ALOG02 78.95% AFR-06 AHS01-03 TC-18 Overall N/A N/A 93.33% ALOG02 100% None Passed Rate (Common Test Cases) 88.73% 73.62% 90.81% 89
4.4 PRESENTATION OF FINDINGS A summary of the field findings of section 4.2 is presented in graphic form to help the reader understand the test results better. The evaluation results of the three evaluated tools are presented as a bar chart in Figure 4.4. Figures 4.1 to 4.3 represent the individual evaluation results of tools FTK Imager, Helix 3 Pro and AIR in the test cases that were applied to them. As mentioned previously, each tool may have different test cases specifically applied. Therefore, the test result of each tool is presented in their individual figure. Figure 4.4 is a comparison chart of the results obtained for three evaluated tools in each of test cases. The number of test cases performed for each tool depends on the functions that the tool provided. FTK Imager had 18 test cases tested versus 15 test cases for Helix 3 Pro and AIR. The horizontal axis in Figure 4.1 to 4.3 represents the test cases that applied to each individual tool. The horizontal axis in Figure 4.4 represents the test cases that tested all three tested disk imaging tools. The vertical axis in Figure 4.1 to 4.4 represents the pass rate of all test cases in percentage. The percentage is derived from the total number of passed assertions divided by the total number of tested assertions. Figure 4.1 indicates that FTK Imager passed many test cases with 100% pass rate and its worst performance was in test case TC-12(2). According to Figure 4.2, Helix 3 Pro did not achieve 100% pass rate and in three of the test cases, namely TC-12(1), TC- 12(2) and TC-16(1), it had a pass rate lower than 35% pass rate. Figure 4.3 shows that AIR reached over 75% pass rate overall performance across all applied test cases. Figure 4.4 indicates that FTK Imager and AIR outperform Helix 3 Pro. Helix 3 Pro has lower than 35% pass rate in three tests, whereas AIR has more than 75% of pass rate in every test case and FTK Imager has average pass rate over 70%. The overall pass rate in the common test cases indicates AIR outperforms FTK Imager and Helix 3 Pro. 90
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Evaluating A Selection of Tools for
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Acknowledgements This thesis has be
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imaging data when building disk ima
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2.3.3.1 dcfldd ....................
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4.3 Research Analysis .............
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List of Tables Table 2.1: Existing
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AI Access Interface AM Access Metho
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SWGDE Scientific Working Group on D
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NetIntercept Network monitoring and
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The aim of this chapter is to provi
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producing unreliable results. Extra
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1.4 CONCLUSION Chapter 1 is concern
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forensic software EnCase and Sleuth
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2.1.2 Investigative Processes And S
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Preparation Collection Examination
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13 Investigative Process Model (Fre
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eaders to have better understanding
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text or hexadecimal format (Adopted
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3. Duplicability and Modifiability
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oth original and duplicate copy of
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Apache web server and Microsoft Int
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forensic tools, process or procedur
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Guo et al. (2009) have proposed a f
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Table 2.4 Mandatory features of Dis
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2.3.3.2 dc3dd Dc3dd is another enha
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area to backup their Proprietary so
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Also, MBR disks only support four p
Page 55 and 56: Table 2.6 Functionalities of Disk I
Page 57 and 58: for digital investigation to identi
Page 59 and 60: studies and discussions, the requir
Page 61 and 62: answered. Details of data collectio
Page 63 and 64: experts will be used to narrow down
Page 65 and 66: anomalies are analysed to identify
Page 67 and 68: esulting acceptance spectrum can be
Page 69 and 70: Figure 3.5. Process of evaluation c
Page 71 and 72: Stage 1 Understand the discipline o
Page 73 and 74: Testing requirements Selected disk
Page 75 and 76: Phase 1 Select the software disk im
Page 77 and 78: connected to the computer using a P
Page 79 and 80: When the acquired images are saved
Page 81 and 82: 3.4.3 Data Analysis Methods GA is a
Page 83 and 84: There are many other types of hardw
Page 85 and 86: Main Research Question Sub Question
Page 87 and 88: 4.1 VARIARTIONS IN RESEARCH SPECIFI
Page 89 and 90: 4.2.1 Testing Environment Two execu
Page 91 and 92: Using program HDAT2, HPA and DCO ar
Page 93 and 94: 4.2.2.3 TC-03: Acquiring A Hard Dri
Page 95 and 96: Table 4.7 TC-06 Result Summary Test
Page 97 and 98: FTK Imager successfully verified th
Page 99 and 100: Assertions AHS01-03 AFR01-03 AFR01-
Page 101 and 102: Helix 3 pro was unable to recover t
Page 103 and 104: Helix 3 Pro was not able to read th
Page 105: The method of data analysis is desc
Page 109 and 110: Pass Rates (%) 100.00% 90.00% 80.00
Page 111 and 112: Pass Rate (%) 100.00% 90.00% 80.00%
Page 113 and 114: 5.0 INTRODUCTION Chapter 5 Discussi
Page 115 and 116: tools. For instance, the test case
Page 117 and 118: their latest FTK Imager release not
Page 119 and 120: information of the total number of
Page 121 and 122: Helix 3 Pro presented some usabilit
Page 123 and 124: Software support is minimum and the
Page 125 and 126: 2.2.4, forensic software validation
Page 127 and 128: elease version mounts file systems
Page 129 and 130: and TC-18, AIR has outperformed oth
Page 131 and 132: 6.0 INTRODUCTION Chapter 6 Conclusi
Page 133 and 134: inconsistent with what is stated in
Page 135 and 136: eginning of and the end of the disk
Page 137 and 138: 6.4 CONCLUSION The main objective o
Page 139 and 140: Beebe, N. L., & Clark, J. G. (2005)
Page 141 and 142: Erbacher, R. F. (2010). Validation
Page 143 and 144: Kunda, D., & Brooks, L. (1999). App
Page 145 and 146: Payne, C. (2002). On the Security o
Page 147 and 148: Smith, R. (2009). Make the most of
Page 149 and 150: Cases Daubert v. Merrell Dow Pharma
Page 151 and 152: Appendix 2 - Testing requirements 1
Page 153 and 154: 06 format should contain same data
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Assertions for Fundamental Requirem
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TSP-AIC-10 TSP-AIC-11 image file fo
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4.1 Drive Reset (Common in most Tes
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This procedure outlines the process
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7. Keep setting “noerror, sync”
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Appendix 6 - Gap Analysis Matrix 15
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Image Creation (IC) Function Requir
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Appendix 7 - Disk Imaging Tools Tes
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FTK Imager 2.9.0.1385 (Release Date
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Source Device: Drive Setup: Log hig
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Log highlights: Results by assertio
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1.6 TC-02-FAT16 FTK Imager 2.9.0.13
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Source Device: Drive Setup: Partiti
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1.10 TC-02-HFS+ FTK Imager 2.9.0.13
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1.12 TC-03-DCO FTK Imager 2.9.0.138
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1.13 TC-05-DD FTK Imager 2.9.0.1385
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1.14 TC-05-Smart FTK Imager 2.9.0.1
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Drive Setup: Log highlights: Result
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Results by assertion: FTK Imager 2.
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1.19 TC-10-CorruptImage FTK Imager
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1.21 TC-11-E01_Smart FTK Imager 2.9
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1.25 TC-11-Smart_E01 FTK Imager 2.9
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Results by assertion: verified FTK
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Helix3 Pro R3 (Release Date: 30 th
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Results by assertion: Helix3 Pro R3
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2.3. TC-02-NTFS Helix3 Pro R3 (Rele
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Device: Serial Number: 6PS2CA4Z Sec
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Partition Table: Log highlights: Re
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2.11. TC-03-DCO Helix3 Pro R3 (Rele
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2.12. TC-05-EnCase6 Helix3 Pro R3 (
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2.13. TC-06-UNC Helix3 Pro R3 (Rele
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2.14. TC-07-InsufficientSpace & TC-
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Drive Setup: Partition Table (GPT d
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AIR 2.0.0 (Release Date: 17th, Feb
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3.3. TC-02-NTFS Test Case TC-02-NTF
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3.4. TC-02-Ext2 AIR 2.0.0 (Release
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3.5. TC-02-Ext3 AIR 2.0.0 (Release
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3.6. TC-02-FAT16 Test Case TC-02-FA
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Results by assertion: AIR 2.0.0 (Re
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3.17. TC-13 Overlapping Partitions
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3.21. TC-16-02 Acquire a GPT disk A
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